The action of Vilitra 20 mg is identical to that of tadalafil and Sildenafil. It has the ability to control the activity of this enzyme. Vilitra 20mg stops the activity of this enzyme and improves blood flow to the penis, making it firm and erect. At the same time, the blood vessels that carry blood out of the penis decrease in size and decrease the removal of blood from the penis. Erection can be easily achieved using Vilitra 20 mg. The pharmaceutical form available in tablets of this medicine should be taken with water half an hour before sexual intercourse. Do not take more than a single dose of this medication in 24 hours.